Home / 121,933.89-168,211.94-78,927.26

Finding the Fourth Proportional to 121,933.89, 168,211.94 and 78,927.26

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Solution

The fourth proportional to 121,933.89, 168,211.94 and 78,927.26 is: 108,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,933.89 : 168,211.94 = 78,927.26 : x
  2. Step 2: Convert to fraction form
    121,933.89/168,211.94 = 78,927.26/x
  3. Step 3: Cross multiply
    121,933.89x = 168,211.94 × 78,927.26
  4. Step 4: Simplify right side
    121,933.89x = 13,276,506,287.79
  5. Step 5: Solve for x
    x = 13,276,506,287.79/121,933.89
  6. Step 6: Final answer
    x = 108,882.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.